{"schema":"threatline.record/2","record":{"id":"CVE-2026-86833","aliases":[],"summary":"MetForm < 4.3.1 - Unauthenticated HTML Injection in Notification Emails via Field Shortcodes","details":"The MetForm WordPress plugin before 4.3.1 does not sanitize or escape submitted form-field values before inserting them into the HTML body of its email notifications, allowing unauthenticated attackers to inject arbitrary markup into the administrator and submitter notification emails the site sends.","categories":["Unclassified"],"product":"MetForm","vendor":"Unknown","ecosystem":null,"affected_ranges":[{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2026-86833","source_modified_at":"2026-10-07T09:49:40.451Z","fetched_at":"2026-10-23T18:48:36.087640Z","product":"MetForm","vendor":"Unknown","versions":[{"status":"affected","versionType":"semver","version":"0","lessThan":"4.3.1"}],"defaultStatus":"unaffected"}],"fixed_versions":[{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2026-86833","source_modified_at":"2026-10-07T09:49:40.451Z","fetched_at":"2026-10-23T18:48:36.087640Z","package":{"name":"MetForm","ecosystem":null},"version":"4.3.1","basis":"first unaffected version stated in the CVE record"}],"cvss":5.4,"severity":"Medium","kev":{"listed":false},"epss":{"probability":0.00162,"percentile":0.05066,"score_date":"2026-10-23"},"published_at":"2026-10-07T06:47:51.929Z","modified_at":"2026-10-07T09:49:40.451Z","provenance":[{"source":"CVE List","url":"https://www.cve.org/CVERecord?id=CVE-2026-86833","fetched_at":"2026-10-23T18:48:36.087640Z","source_modified_at":"2026-10-07T09:49:40.451Z"},{"source":"EPSS","url":"https://api.first.org/data/v1/epss?cve=CVE-2026-86833","fetched_at":"2026-10-23T18:42:43.628194Z","source_modified_at":"2026-10-23"}],"sources":["CVE List","EPSS"],"references":[{"source":"CVE List","url":"https://wpscan.com/vulnerability/6d6850d6-6fdf-4b97-9ccb-c90f9ed01ab0/","tags":["exploit","vdb-entry","technical-description"]}],"locations":[],"motoko_assessment":{"status":"requires_architecture_review","automatic_remediation":false},"cve_state":"PUBLISHED","cvss_source":"CVE List","ssvc":{"exploitation":"none","automatable":"no","technical_impact":"partial","assessed_at":"2026-10-07T09:49:24.362509Z"},"classification":{"method":"product-first software-layer rules","rules_version":"2.1","matched_on":null,"confidence":"unknown","reviewed":false},"change_timestamp":"2026-10-07T09:49:40.451Z","content_hash":"d809ef898742a63919237c06a9af3416fa2517f72fc43ab92053f5bf680f8325"}}